Passive Cable Connection Discovery via Signal Driver ID Exchange
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Solution Overview
Problem
Managing interconnections in complex data centers is challenging due to the difficulty in identifying connections between components using passive cables, as existing solutions require smart cables, mass-termination systems, or side-band communication, which are costly or impractical for complex configurations.
Innovation Solution
Utilizing existing signal drivers/receivers to perform physical layer communication over passive cables for connection discovery by exchanging unique IDs through low-level power up/down controls, eliminating the need for active cables or additional components, and enabling a high-level management tool to determine connections using in-band communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If smart cables are used for connection discovery, then connection identification capability is improved, but cost and device complexity increase
Solution Approach 1:
The patent introduces an intermediary communication mechanism that uses existing in-band signaling resources (power up/down controls) as a mediator to transmit connection information. Instead of requiring smart cables with embedded microcontrollers, the system uses the signal driver/receiver's existing control signals as an intermediary carrier to convey unique IDs and connection status, thereby resolving the contradiction between connection identification capability and cable complexity
Solution Approach 2:
The signal driver/receiver performs self-service by utilizing its own existing power up/down control signals to carry connection discovery information. The system leverages resources already present in the signal driver/receiver architecture, eliminating the need for additional smart cable components while maintaining connection identification capability
2Measurement precision
If smart cables are used for connection discovery, then connection identification capability is improved, but power consumption increases
Solution Approach 1:
The patent applies multi-functionality by making the existing power up/down control signals serve dual purposes: their primary function of powering the signal driver/receiver and a secondary function of carrying connection discovery information. This eliminates the need for separate power-consuming smart cable components, thereby reducing overall power consumption while maintaining connection identification capability
Solution Approach 2:
The system uses self-service by leveraging the signal driver/receiver's own existing control signals for connection discovery, eliminating the need for additional power-consuming components. The unique ID transmission is achieved through the signal driver/receiver's inherent control mechanisms rather than through separate powered communication circuits in smart cables
3Adaptability or versatility
If mass-termination systems are used for connection management, then connection configuration capability is improved, but adaptability to complex configurations deteriorates
Solution Approach 1:
The patent changes the parameter of communication methodology from requiring predefined physical pathways (mass-termination) to using dynamic in-band signaling. By modifying how connection information is transmitted and received—using unique IDs exchanged through power up/down controls—the system achieves adaptability to complex configurations without the rigidity of mass-termination systems
Solution Approach 2:
Instead of forcing connections to fit predefined mass-termination pathways, the patent inverts the approach by allowing the system to dynamically discover and adapt to actual connection configurations through bidirectional unique ID exchange. This inversion enables flexibility in complex configurations without requiring complex mass-termination infrastructure
4Ease of manufacture
If manual cabling is used for interconnections, then ease of installation is improved, but reliability of connection management deteriorates
Solution Approach 1:
The patent implements feedback mechanisms where signal drivers and receivers automatically exchange unique IDs and report connection status to a management tool. This automated feedback loop eliminates human error in connection management while maintaining the simplicity of manual cable installation, thereby improving reliability without sacrificing installation ease
Solution Approach 2:
The system performs self-service by automatically discovering and reporting connections without requiring manual intervention for verification. The signal drivers and receivers autonomously exchange identification information and report status, eliminating human error in connection management while maintaining the simplicity of manual cable installation
Data Source
AI summary
In one example in accordance with the present disclosure, a system is provided. The system includes a first subsystem and a second subsystem, connectable to each other via a passive cable, and each connected to a high-level management tool. Each subsystem includes a signal driver/receiver capable of sending and receiving data and signals over the passive cable and a connection discovery engine to access low-level power up/down controls of the signal driver/receiver. The connection discovery engine is to, via physical layer communication, send a local unique identifier (ID) of the particular signal driver/receiver over the passive cable. The connection discovery engine is further to, via physical layer communication, receive, over the passive cable, a remote unique ID of the signal driver/receiver in the other connected subsystem. The connection discovery engine is further to send the local unique ID and the remote unique ID to the high-level management tool.